Humboldt-Universität zu Berlin | Wirtschaftswissenschaftliche Fakultät | High Dimensional Nonstationary Time Series | About us | News Feed | News 2017 | Dissertation: L. Yu completes PhD Dissertation: L. Yu completes PhD 27.03.2017. Lining Yu, IRTG PhD student, successfully defended her PhD dissertation on "Tail Event Driven Financial Risk Modelling". Congratulations! 28.03.2017